REE Zoning in Allanite Related to Changing Partition Coefficients During Crystallization: Implications for REE Behaviour in an Epidote-Bearing Tonalite

• Main Authors: Beard, J S, Sorensen, S S, Gieré, Reto
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: 2006
• Subjects: allanite; zoning; REE; partitioning; tonalite; Earth Sciences; Environmental Sciences; Physical Sciences and Mathematics; Bell Island
• Online Access: https://repository.upenn.edu/handle/20.500.14332/33083; https://hdl.handle.net/20.500.14332/33083

Allanite is present in most samples of the tonalitic Bell Island Pluton, with an average mode near 0.05 wt.%. Allanite occurs as cores in igneous epidote-clinozoisite and exhibits characteristic and consistent zoning patterns. REE-rich cores (All40–70) grade out towards epidote-clinozoisite with REE...